Ludington Police Chief Barnett to retire in April. #LudingtonNews. By Rob Alway, Editor-in-Chief. LUDINGTON — Police Chief Mark Barnett announced today that he will be retiring, effective April 15, 2020. Barnett has served as chief since 2001. Prior to coming to Ludington, Barnett served on the Pontiac Police Department for just over 24 years. When he retires, he will have…